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58 lines
1.4 KiB
58 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* tdhd1.h - ALPS TDHD1-204A tuner support |
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* |
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* Copyright (C) 2008 Oliver Endriss <[email protected]> |
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* |
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* The project's page is at https://linuxtv.org |
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*/ |
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#ifndef TDHD1_H |
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#define TDHD1_H |
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#include "tda1004x.h" |
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static int alps_tdhd1_204_request_firmware(struct dvb_frontend *fe, const struct firmware **fw, char *name); |
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static struct tda1004x_config alps_tdhd1_204a_config = { |
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.demod_address = 0x8, |
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.invert = 1, |
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.invert_oclk = 0, |
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.xtal_freq = TDA10046_XTAL_4M, |
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.agc_config = TDA10046_AGC_DEFAULT, |
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.if_freq = TDA10046_FREQ_3617, |
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.request_firmware = alps_tdhd1_204_request_firmware |
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}; |
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static int alps_tdhd1_204a_tuner_set_params(struct dvb_frontend *fe) |
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{ |
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struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
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struct i2c_adapter *i2c = fe->tuner_priv; |
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u8 data[4]; |
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struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) }; |
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u32 div; |
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div = (p->frequency + 36166666) / 166666; |
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data[0] = (div >> 8) & 0x7f; |
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data[1] = div & 0xff; |
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data[2] = 0x85; |
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if (p->frequency >= 174000000 && p->frequency <= 230000000) |
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data[3] = 0x02; |
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else if (p->frequency >= 470000000 && p->frequency <= 823000000) |
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data[3] = 0x0C; |
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else if (p->frequency > 823000000 && p->frequency <= 862000000) |
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data[3] = 0x8C; |
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else |
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return -EINVAL; |
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if (fe->ops.i2c_gate_ctrl) |
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fe->ops.i2c_gate_ctrl(fe, 1); |
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if (i2c_transfer(i2c, &msg, 1) != 1) |
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return -EIO; |
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return 0; |
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} |
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#endif /* TDHD1_H */
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